Expansion-bolt.



EXFANSIGNZLT.

Be it known that FREDEMGK H. BUEGE- iNe, e citizen of the United States, residingl at the city of St. Louis, State of iifiiseeuri5 have invented eel-tain new and ueefui improvements in Expansion-Bolts, of which the oiiowing is a specification,

This invention relates to certain new :mei useful impiovemeuts in expansion boite, and has for its piimeijy object e `ooit of this type which ie particularly adapted for use in oonneetion with metai wok, espeeieiiy to oonnect the boiler pitite of e, traction engine (iirectiy to the exie.

A further objectof the provide e@ boit capnbie of maximufii amount o vibration Without ring ioose.

in 'the drawingsi s' ,b L tive view of the peseiit invention, e view partly in eee-tien showing the beit piied to e traction engi Le, and eentrei iengitudinei see ionei vieiv oi Fig. l.

to the dre-,Wings the numeral l designa/tes e sieei-.fe which is formeel om end with exterior thieefis 2 emi et other enti Witii en wi'ygoiiei iieac' The ooit po'lnei is designated emi is pioinvention is to Witiietanm' e g ervicied et one end with exterior Screw thiees 3.4 and et its opposite eed with :i eoniee heed 5, the iet-ter being oi eiigegemeet with e ooiiicei eeet 15 which is eiiie in the threaded me 2 of the sieeve ii. The sieeve, it vviii ioenoteci, is omei en@ devoid of any siits or the. "like vi'ii" tend to weaken the seme, the vvk surrounds t-"econiea-i seat i5 being e ontinuoue uno-,okee one. The theeeie emi 1li o' the boit poper i has a mit 6 threedezi thereon, :mii `the inner ieee 0:55 Sie nut t3 beats against Washer which i tei :imite the outer :time of the poiygeiiei iiee B the sieeve It. The invention is petieiiieiiy ede-gated i'oi use in ooitiiig the ooiiei 'Loiate ei ft traction engine direetiy to the erde, and by lfeiwig; t0 Fig. Q the fii'ewiiigs it xviii Seem that tiie ioiier shown in fiegment e igiiete 8 is provide@ with en en bracket 9 which is ivete tiiefete, the

iron 9 being' pfovide. with :i iioie ti'ioiigi which tile Sleeve 1 is peeeeti, ii the tiieeji ed eos,A of the sieere if Specileetion ei Letters .'ateet.

eeenemei E. Boxsei'iie, Lemie, 'Missotmi eeeemee e, wie.

Serial 'e. 642,197.

The sieeve Q is -ti'xieaded into the threaded opening 1i by applying e Wieeeh to the poiygenai heeci 3 thereof, and, :1i`tei" ti1eheedv has been driven to the iimit of its inward. nievement, the nut 6 is theo rotated to draw tile conical' head 5 et? the bolt proper 4 into iiictioiiei Contact ,with the coiiiozii Seat i5 of the eyiindei i Jriiien will effect expansion of the thin tapering' waii i2 which is oime by tile integiei seat i5, which vveii sui-, rounds the 5 :mii is, ae above ste-ted, en unbroken continuous one. The Weil 12 upon being moved outwardly by i'eeson the eoiiioe'i heed 5 eeeting a. wefigiiig; action tiiereaggeinst, will cause the screw threas 2 et the extremity of the sleeve l to be wedged into engagement Witiithe threads @i the tiiiezuied opening l1 of the miie fettine if), emi Wiii e'eetuaiiy peveiit i eeiit of the sleeve I from the exie By mspect-ioii'oi Fig., 2 o the it 'viii be seen that the eciev iit bender?, ami the eeiew use iight iieiioei, so til-et is tamed to the eoiieei ige the emi 'i2 oi the eieeve i tiieade'i opening li, :my movement of the sleeve which might result from a turning movement ei the mit 6 wiii cause sieeve i 'to tighten imei. thus siieuifi the sieeve 1 for eng ieeeeii been moved to its limit of tigii i e tighten the sleeve in en obpeizieiiieiiy te 'be note. that 'the -iit invention is designed especieiiy 'for ilse in connection Wi; metal Work, emi pmb tieuieiy traction engines. Traction engines su Aecteii to greet amount of Vivien ifesuite not oniy from the o? the gcouzfi over Wiiieii the argine .but .se eine to the engine movel ents. oiciiiiii'y .boite etre used ier. than the @Reforming the suoget mi: eff this invention., the seme it iii dieeeiiv'* he e 'Tiiie :i i *1 vmitnges oi ieee? if the ,ieiey, eno. m ieg e m i or ene., Y eee eeeiiy erggeii out movement, votation of the mit' wardly, and since the seat 15 flares outwardly an extremely thinned portion is formed at the extremity of the threaded end of the sleeve, which is easily forced outwardly by the head 5 of the bolt proper.

What is claimed is: 1. An expansion bolt of the type set forth, consisting of a sleeve of uniform diameter throughout formed with exterior'threads at one end and with an integral Wrench-engaging head at its opposite end, said sleeve being formed at its threaded end with an interior outwardly flaringv conical seat the Wall of which is thinned at its free end and is continuous and unbroken throughout, a bolt proper having a conical head at one end which engages said conical seat of the sleeve,

said bolt' proper being arranged in said sleeve and. having itsother end threaded and projecting beyond said head of the sleeve, and a nut on said threaded end of the bolt proper to bear against the head of the sleeve andato draw said head into Wedg 2. An expansion bolt of the type set forth, Y

including a sleeve having a conical interior seat ait one end forming a thin continuous unbrolten Wall that surrounds the seat, said Wall being exteriorly threaded and adapted to be received in a threaded openingvot an article, and 'a bolt proper in the sleeve having a headv at one end to engage :in said seat of the sleeveand means at its opposite end to wedge said bolt head into engagement with said seat to thereby expand said thin continuous Wall which surrounds the .scat to cause the threads of said wall to become wedged into engagement with the threads of said threaded opening oi' the article.

In testimony, whereof' l hereunto aiix iny signature in the presence of two Witnesses. l FREDERICK Il, RUICCIUNG.' Witnesses GEORGE (i. ANnnnSoN, BER'rlm von Bnrmnns. 

